X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=gdb%2Flinux-nat.h;h=621737035dbec57835345491bbb5d9df0b5f9668;hb=b7761f11062dc4d4fd554342ac2d2fb235b65b7a;hp=78312d71b31ebeec988af395ccf233c0664f0fda;hpb=0274a8cedbd446865a1e5fdec8057f4a327e19aa;p=binutils-gdb.git

diff --git a/gdb/linux-nat.h b/gdb/linux-nat.h
index 78312d71b31..621737035db 100644
--- a/gdb/linux-nat.h
+++ b/gdb/linux-nat.h
@@ -1,11 +1,12 @@
 /* Native debugging support for GNU/Linux (LWP layer).
-   Copyright 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
+
+   Copyright (C) 2000-2012 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 2 of the License, or
+   the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
@@ -14,11 +15,31 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "target.h"
+
+#include <signal.h>
+
+struct arch_lwp_info;
+
+/* Ways to "resume" a thread.  */
+
+enum resume_kind
+{
+  /* Thread should continue.  */
+  resume_continue,
+
+  /* Thread should single-step.  */
+  resume_step,
+
+  /* Thread should be stopped.  */
+  resume_stop
+};
 
-/* Structure describing an LWP.  */
+/* Structure describing an LWP.  This is public only for the purposes
+   of ALL_LWPS; target-specific code should generally not access it
+   directly.  */
 
 struct lwp_info
 {
@@ -46,25 +67,142 @@ struct lwp_info
      didn't try to let the LWP run.  */
   int resumed;
 
+  /* The last resume GDB requested on this thread.  */
+  enum resume_kind last_resume_kind;
+
   /* If non-zero, a pending wait status.  */
   int status;
 
   /* Non-zero if we were stepping this LWP.  */
   int step;
 
+  /* Non-zero si_signo if this LWP stopped with a trap.  si_addr may
+     be the address of a hardware watchpoint.  */
+  struct siginfo siginfo;
+
+  /* STOPPED_BY_WATCHPOINT is non-zero if this LWP stopped with a data
+     watchpoint trap.  */
+  int stopped_by_watchpoint;
+
+  /* On architectures where it is possible to know the data address of
+     a triggered watchpoint, STOPPED_DATA_ADDRESS_P is non-zero, and
+     STOPPED_DATA_ADDRESS contains such data address.  Otherwise,
+     STOPPED_DATA_ADDRESS_P is false, and STOPPED_DATA_ADDRESS is
+     undefined.  Only valid if STOPPED_BY_WATCHPOINT is true.  */
+  int stopped_data_address_p;
+  CORE_ADDR stopped_data_address;
+
+  /* Non-zero if we expect a duplicated SIGINT.  */
+  int ignore_sigint;
+
+  /* If WAITSTATUS->KIND != TARGET_WAITKIND_SPURIOUS, the waitstatus
+     for this LWP's last event.  This may correspond to STATUS above,
+     or to a local variable in lin_lwp_wait.  */
+  struct target_waitstatus waitstatus;
+
+  /* Signal wether we are in a SYSCALL_ENTRY or
+     in a SYSCALL_RETURN event.
+     Values:
+     - TARGET_WAITKIND_SYSCALL_ENTRY
+     - TARGET_WAITKIND_SYSCALL_RETURN */
+  int syscall_state;
+
+  /* The processor core this LWP was last seen on.  */
+  int core;
+
+  /* Arch-specific additions.  */
+  struct arch_lwp_info *arch_private;
+
   /* Next LWP in list.  */
   struct lwp_info *next;
 };
 
-/* Read/write to target memory via Linux's "proc file system".  */
-struct mem_attrib;
-extern int linux_proc_xfer_memory (CORE_ADDR addr, char *myaddr, int len,
-				   int write, struct mem_attrib *attrib,
-				   struct target_ops *target);
+/* The global list of LWPs, for ALL_LWPS.  Unlike the threads list,
+   there is always at least one LWP on the list while the GNU/Linux
+   native target is active.  */
+extern struct lwp_info *lwp_list;
+
+/* Iterate over each active thread (light-weight process).  */
+#define ALL_LWPS(LP)							\
+  for ((LP) = lwp_list;							\
+       (LP) != NULL;							\
+       (LP) = (LP)->next)
 
-extern void linux_record_stopped_pid (int pid);
+#define GET_LWP(ptid)		ptid_get_lwp (ptid)
+#define GET_PID(ptid)		ptid_get_pid (ptid)
+#define is_lwp(ptid)		(GET_LWP (ptid) != 0)
+#define BUILD_LWP(lwp, pid)	ptid_build (pid, lwp, 0)
+
+/* Attempt to initialize libthread_db.  */
+void check_for_thread_db (void);
+
+int thread_db_attach_lwp (ptid_t ptid);
+
+/* Return the set of signals used by the threads library.  */
+extern void lin_thread_get_thread_signals (sigset_t *mask);
+
+/* Find process PID's pending signal set from /proc/pid/status.  */
+void linux_proc_pending_signals (int pid, sigset_t *pending,
+				 sigset_t *blocked, sigset_t *ignored);
+
+/* linux-nat functions for handling fork events.  */
+extern void linux_enable_event_reporting (ptid_t ptid);
+
+extern int lin_lwp_attach_lwp (ptid_t ptid);
+
+extern void linux_stop_lwp (struct lwp_info *lwp);
 
 /* Iterator function for lin-lwp's lwp list.  */
-struct lwp_info *iterate_over_lwps (int (*callback) (struct lwp_info *, 
+struct lwp_info *iterate_over_lwps (ptid_t filter,
+				    int (*callback) (struct lwp_info *,
 						     void *), 
 				    void *data);
+
+typedef int (*linux_nat_iterate_watchpoint_lwps_ftype) (struct lwp_info *lwp,
+							void *arg);
+
+extern void linux_nat_iterate_watchpoint_lwps
+  (linux_nat_iterate_watchpoint_lwps_ftype callback, void *callback_data);
+
+/* Create a prototype generic GNU/Linux target.  The client can
+   override it with local methods.  */
+struct target_ops * linux_target (void);
+
+/* Create a generic GNU/Linux target using traditional 
+   ptrace register access.  */
+struct target_ops *
+linux_trad_target (CORE_ADDR (*register_u_offset)(struct gdbarch *, int, int));
+
+/* Register the customized GNU/Linux target.  This should be used
+   instead of calling add_target directly.  */
+void linux_nat_add_target (struct target_ops *);
+
+/* Register a method to call whenever a new thread is attached.  */
+void linux_nat_set_new_thread (struct target_ops *, void (*) (struct lwp_info *));
+
+/* Register a method that converts a siginfo object between the layout
+   that ptrace returns, and the layout in the architecture of the
+   inferior.  */
+void linux_nat_set_siginfo_fixup (struct target_ops *,
+				  int (*) (struct siginfo *,
+					   gdb_byte *,
+					   int));
+
+/* Register a method to call prior to resuming a thread.  */
+
+void linux_nat_set_prepare_to_resume (struct target_ops *,
+				      void (*) (struct lwp_info *));
+
+/* Update linux-nat internal state when changing from one fork
+   to another.  */
+void linux_nat_switch_fork (ptid_t new_ptid);
+
+/* Return the saved siginfo associated with PTID.  */
+struct siginfo *linux_nat_get_siginfo (ptid_t ptid);
+
+/* Compute and return the processor core of a given thread.  */
+int linux_nat_core_of_thread_1 (ptid_t ptid);
+
+/* Set alternative SIGTRAP-like events recognizer.  */
+void linux_nat_set_status_is_event (struct target_ops *t,
+				    int (*status_is_event) (int status));